Question

sometimes you may notice a black powder or white discs floating on the pickle or muramba when a jar is opened by your mother after a long time what exactly are these why are such food items not good to eat how can the pickles or murambas be preserved safe for a long time?

Answer 1

pickles and murambas preserve long time by oil oil act as preservative material

Answer 2

we should add the salt in exact quality in pickles so that we can preserve in for more days
hope it will help you...